<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="button.css">
  </head>
  <body>
    <button id="operation">一键修改</button>
    <button id="hideHeader">关闭知乎头部</button>
    <button id="hideVideo">屏蔽知乎视频</button>
    <button id="changeColor">修改颜色</button>
    <script src="index.js"></script>
  </body>
</html>